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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on June 18, 1998. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 8250 | S26 | E01 | 06 | 0010 | BETA | Jun 19, 1998 | Jun 26, 1998 | Jul 10, 1998 |
| № 8249 | S28 | E47 | 01 | 0060 | ALPHA | Jun 23, 1998 | Jun 30, 1998 | Jul 14, 1998 |
| № 8244 | N35 | W24 | 16 | 0040 | BETA | Jun 17, 1998 | Jun 24, 1998 | Jul 9, 1998 |
| № 8243 | N18 | E10 | 14 | 0220 | BETA | Jun 20, 1998 | Jun 27, 1998 | Jul 11, 1998 |
| № 8242 | S22 | W12 | 07 | 0010 | BETA | Jun 18, 1998 | Jun 25, 1998 | Jul 9, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to June 1998. The gray background is the average SSN index.
